OLDROYD® Green Xv25 is a perforated reservoir membrane with X pattern. It is made of polypropylene with a friction surface of TPO (PP). This makes the membrane easy and stable to work with even at low temperatures.
The membrane has 20 mm high studs and a 5 mm thick geotextile (600 g/m2) which create a reservoir of approximately 7 litres per m2. This is advantageous in dry areas. Correctly positioned 10 mm holes drains away excess water.